during different historic periods, land of iran has been invaded by alien tribes and iranian written works such as religious, scientific and historic books have been subjected to detruction and demolition for several times. many historical evidences have referred to background of this issue and at the same time they testified that iranian cultural written hertage has been subjected to recovery ...

Functional systems, such as feeding mechanics, often involve the evolution of several components of the musculoskeletal system that are moved in coordination to capture prey. Because these systems often involve the quick movement of several structures, some feeding systems have been hypothesized to be stereotypic. While the motor activity patterns are often stereotyped, the subsequent kinematic...

The controller attempts to minimize the error over time by adjustment of a control variable, such as the position of a control valve, a damper, or the power supplied to a heating element, to a new value determined by a weighted sum Where k p, K i and K d all non negative, denote the coefficients for the proportional, integral and derivative terms. Dead time’s producea decrease in the system pha...

fiction has a special position because of its charisma and special charm and is considered as an important literary device; the most important task of story is to promote the moral and spiritual virtues of characters and to fight evil and injustices. therefore, dedicated novelist should try not only to entertain the reader but also to be aware of his ultimate goal; which is to teach and to info...

global warming and climate change have drawn special attention to soil and its potential for stable carbon sequestration. soils are the largest stores of carbon in terrestrial carbon cycle and contain about three times more carbon than vegetation cover and two times more than that of atmosphere. studying the effects of grazing on soil carbon storage is important because of the major role soil o...